Turn-table.



PATENTED NOV. 12, 1907.

J. G. FLEMING.

TURN TABLE APPLICATION FILED AUG. 23, 1906.

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UNITED STATES PATIENT OFFICE.

JOSIAH C. FLEMING, OF DETROIT, MICHIGAN, ASSIGNOR TO PILLING AIR ENGINECOMPANY, OF DETROIT, MICHIGAN, A CORPORATION OF MICHIGAN.

TURN-TAB LE Specification of Letters Patent.

Patented Novf12, 1907.

Application filed August 23. 1906. Serial No. 331.710.

To all whom it may concern:

Be it known that I, .Iosmn C. FLEMING, a citizen of the United States of"America, residing at Detroit, in the county of Wayne and State ofMichigan, have invented certain new and useful Improvements in Turn-Tables, of which the following is a specification, reference being hadtherein to the accompanying drawings.

The invention relates to turn-tables particularly designed for use aslocomotive turn-tables, and it is the object of the invention to obtaina construction which may be readily operated, either by power or byhand. To this end the invention consists in the construction ashereinafter set forth.

In the drawings, Figure 1 is a plan view of the turntable; Fig. 2 is anelevation of the driving mechanism; and Fig. 3 is a sectional plan viewthereof.

A is the bridge or table, and B the circular track on which it issupported, these parts being of any suitable construction.

0 is a propelling mechanism which is attached to the bridge frame A andcomprises a traction wheel D and a motor E for operating said wheelthrough the medium of suitable intermediate gear train F. The motor E ispreferably one operated by compressed air and this is supplied directlyfrom the air compressor on the 10- comotive Where the latter is livethat is, where it is under steam. Both motor and traction wheel D arepreferably mounted upon a frame G which is hinged to one of the sides Hof the table A and the required pressure of the wheel upon the track isfurnished by a spring I bearing downward on the frame G and adjustablein tension by the hand wheel K.

Heretofore, the construction substantially as above described has beenin use and is adapted for the operation of locomotive train tableswherever the motive fluid under pressure is available, that is, eitherfrom a stationary compressor plant, or where live locomotives arehandled. It frequently happens, however, that dead locomotives arehandled on the turn-table, and, whereno other source of compressed airis available, the motor drive mechanism is useless. Moreover, it is notonly useless, but is a positive hindrance to the hand operation of thetable, as it operates as a brake, greatly increasing the effort requiredfor moving the table. In the present invention, I have overcome thisdifliculty by providing means by which the motor, when not in use, isdisconnected, so as to cut out its resistance to the hand operation.

In the construction illustrated, L is the motor shaft,

upon which is mounted the pinion M meshing with the l gear wheel N uponthe parallel shaft 0, and P is a pinion on said shaft driving a gearwheel Q secured to the drive wheel D, thereby forming through the mediumof an intermediate pinion Q a positive drive train between the motor andwheel 'D. To disconnect this train, a clutch is introduced therein,preferably between the shaft L and the pinion M. As illustrated, thepinion M is revolubly sleeved upon the shaft L adjacent to a collar Rfixed upon said shaft. S is a rod slidable axially through a bore in theshaft L and carrying the coupling pin T, which passes through a slot Uin the shaft and is adapted to engage either a recess V in the collar Ror a corresponding recess W in the pinion M. Thus when the pin T is inthe recess V, the shaft L is free to revolve independently of the pinionM, but when the pin T is in the recess the shaft and pinion are coupled.

X is a lever for operating the rod S, which is lulcrumed at Y to abracket on the frame G and engages a collar Z on the rod S.

With the construction as above described, whenever the turn-table is tobe power-driven, the lever X is shifted so as to couple the pinion M tothe shaft L. The motive fluid may then be supplied to the motor E fromthe locomotive or other source, and will operate the drive wheel throughthe train described. If, on the other hand, the fluid for driving themotor is not available, the lever X is shifted to disconnectthe pinionl\I, which permits of operating the table, as by the hand lever A,without driving the motor.

What I claim as my invention is:

1. The combination with a turn-table, of a propelling mechanismcomprising a track wheel, a motor, a frame on which said motor and trackwheel are mounted, a drive train between said motor nnd track wheelcomprising the motor shaft, :1 parallel shaft, :1 gear and pinionconnection between said parallel shaft and track wheel, inter-meshinggears on said motor and parallel shaft, and a clutch for disconnectingthe gear from the motor shaft, for the purpose described.

2. The combination with a turn-table, of a propelling mechanism thereforcomprising a supporting frame pivoted to the table, a motor thereon, atraction wheel journaled in hearings on the frame, a drive train betweensaid wheel and motor, and a clutch for disconnecting the mo tor from thetraction wheel to permit the table to he operated by hand.

In testimony whereof I ailix my signature in presence of two witnesses.

JOSIAH C. FLEMING.

Witnesses JAMES P. BARRY, THOS. ODONNELL.

